阅读说明：本技术 一种用于无人机的稀土永磁盘式电机 (Rare earth permanent magnet disc type motor for unmanned aerial vehicle ) 是由 周军 于 2019-11-01 设计创作，主要内容包括：本发明属于一种稀土永磁盘式电机,具体是涉及到一种用于无人机的稀土永磁盘式电机,包括固定轴、通过轴承设置在固定轴上的旋转外壳,所述固定轴上固定设置有定子盘,定子盘设置于旋转外壳内,旋转外壳包括上壳和下壳,上壳和下壳靠近定子盘的端面,均呈环形阵列设置有若干个稀土永磁块,两相邻和相对的稀土永磁块级向相反,本发明通过在旋转外壳内设置稀土永磁块作为转子组合件且随电机工作旋转,将定子盘与固定轴固定作为固定端,旋转外壳与稀土永磁块的组合极大的减小了电机的轴向尺寸,电机的稀土永磁块与定子盘组合,保证电机的正常旋转,确保电机能作为无人机螺旋桨驱动的动力。(The invention belongs to a rare earth permanent magnet disc type motor, in particular to a rare earth permanent magnet disc type motor for an unmanned aerial vehicle, which comprises a fixed shaft and a rotary shell arranged on the fixed shaft through a bearing, the permanent-magnet motor comprises a fixed shaft, a stator disc, a rotating shell and a rotor, wherein the fixed shaft is fixedly provided with the stator disc, the stator disc is arranged in the rotating shell, the rotating shell comprises an upper shell and a lower shell, the upper shell and the lower shell are close to the end surface of the stator disc, a plurality of rare-earth permanent magnets are arranged in an annular array, the two adjacent and opposite rare-earth permanent magnets are opposite in grade direction.)

1. The utility model provides a tombarthite permanent magnetism disk motor for unmanned aerial vehicle, characterized by includes fixed axle (12), sets up the rotating housing on fixed axle (12) through the bearing, fixed being provided with stator disc (6) on fixed axle (12), stator disc (6) set up in rotating housing, and rotating housing includes epitheca (1) and inferior valve (4), and the terminal surface that epitheca (1) and inferior valve (4) are close to stator disc (6) all is the annular array and is provided with a plurality of tombarthite permanent magnetism block, and two adjacent and relative tombarthite permanent magnetism block grades are opposite.

2. The rare earth permanent magnet disc type motor for the unmanned aerial vehicle as claimed in claim 1, wherein spacer bushes (3) are arranged at the outer edges of the upper shell (1) and the lower shell (4).

3. The rare earth permanent magnet disc type motor for the unmanned aerial vehicle as claimed in claim 2, wherein the upper shell (1) and the lower shell (4) are provided with air inlet holes (15) penetrating to the stator disc (6), the outer ring of the spacer sleeve (3) is provided with air outlet holes (16), and a gap between the stator disc (6) and the rare earth permanent magnet blocks is communicated with the air inlet holes (15) and the air outlet holes (16).

4. A rare-earth permanent-magnet disc motor for unmanned aerial vehicles according to claim 3, wherein the air inlet holes (15) and air outlet holes (16) are arranged in groups along the axis of the fixed shaft (12) in an annular array.

5. The rare earth permanent magnet disc type motor for the unmanned aerial vehicle as claimed in claim 1, further comprising a stator fixing seat (7) and a stator fixing cover (8), wherein the stator disc (6) is fixedly arranged between the stator fixing seat (7) and the stator fixing cover (8), and the stator fixing seat (7) is connected with the fixed shaft (12) in a key manner.

6. A rare earth permanent magnet disc type motor for an unmanned aerial vehicle according to claim 5, wherein the stator fixing seat (7) and the stator disc (6) are fixed by a limit boss (23).

7. A rare earth permanent magnet disc motor for unmanned aerial vehicle according to claim 6, wherein the fixed shaft (12) is provided with a lock nut (14) at one side of the stator fixing cover (8).

8. A rare earth permanent magnet disc type motor for unmanned aerial vehicle according to any of claims 1 to 7, wherein the fixed shaft (12) penetrates through the lower shell (4), and the end part is fixedly provided with a motor fixing seat (10).

9. A rare-earth permanent-magnet disc motor for unmanned aerial vehicles according to claim 8, wherein the end of the upper shell (1) is fixedly provided with a connecting flange (22).

10. The rare earth permanent magnet disc type motor for the unmanned aerial vehicle as claimed in claim 9, wherein the fixed shaft (12) is a hollow shaft, a wire hole (20) penetrating to the stator disc (6) is formed in the fixed shaft (12), and a wire inlet hole (11) is formed in the fixed shaft (12) and located outside the lower shell (4).

Technical Field

The invention belongs to a rare earth permanent magnet disc type motor, and particularly relates to a rare earth permanent magnet disc type motor for an unmanned aerial vehicle.

Background

At present, the motor that drives the unmanned aerial vehicle screw generally sets up inside the unmanned aerial vehicle fuselage, and the output shaft of its motor is stretching out fuselage installation screw part, adopts this method to have following several drawbacks: 1, the inner space of the unmanned aerial vehicle body is occupied, and from another angle, the unmanned aerial vehicle body is forced to be enlarged, which is not beneficial to the design of the unmanned aerial vehicle; 2, the motor is arranged in the unmanned aerial vehicle, the heat dissipation effect is poor, and a heat dissipation device needs to be additionally arranged to ensure the normal work of the motor; 3 the maintenance and the dismounting are inconvenient, and the motor can be taken down only by dismounting the unmanned aerial vehicle.

The application number is CN 201820419499.3's chinese utility model patent application discloses a disk directly drives motor and industry ceiling fan, and above-mentioned disk directly drives the motor and includes pivot, upper cover, casing, drain pan, support hub and stator core, and the pivot is connected with the cooperation of supporting the hub, and both ends are equipped with suit respectively and are changeing epaxial front bearing, rear bearing around supporting the hub, upper cover, casing and drain pan connect gradually and form the oblate disk peripheral structure that the motor was directly driven to the disk, and stator core establishes to the annular structure pressure equipment on supporting the hub, is equipped with the permanent magnet between stator core and the casing, and above-mentioned motor is inside to be provided with and to support hub, stator core and cylindric permanent magnet, and its structural dimension of motor is equally great, can't accomplish light in weight, small, can't reach the requirement that is used for unmanned aerial vehicle propeller.

Disclosure of Invention

The invention aims to provide a rare earth permanent magnet disc type motor which is light in weight, small in size and good in heat dissipation effect and is used for an unmanned aerial vehicle.

The permanent magnet motor comprises a fixed shaft and a rotary shell arranged on the fixed shaft through a bearing, wherein a stator disc is fixedly arranged on the fixed shaft, the stator disc is arranged in the rotary shell, the rotary shell comprises an upper shell and a lower shell, the upper shell and the lower shell are close to the end face of the stator disc, a plurality of rare earth permanent magnets are arranged in an annular array, and the level directions of two adjacent and opposite rare earth permanent magnets are opposite.

Furthermore, the outer edges of the upper shell and the lower shell are provided with spacer bushes.

Furthermore, an air inlet hole penetrating to the stator disc is formed in the upper shell and the lower shell, an air outlet hole is formed in the outer ring of the spacer sleeve, and a gap between the stator disc and the rare earth permanent magnet block is communicated with the air inlet hole and the air outlet hole.

Furthermore, the air inlet holes and the air outlet holes are arranged in a plurality of groups in an annular array along the axis of the fixed shaft.

The invention also comprises a stator fixing seat and a stator fixing cover, wherein the stator disc is fixedly arranged between the stator fixing seat and the stator fixing cover, and the stator fixing seat is connected with the fixed shaft key.

Furthermore, the stator fixing seat and the stator disc are fixed through a limiting boss.

Furthermore, the fixed shaft is provided with a locking nut at one side of the stator fixed cover.

Furthermore, the fixed shaft penetrates through the lower shell, and the end part of the fixed shaft is fixedly provided with a motor fixing seat.

Furthermore, the end of the upper shell is fixedly provided with a connecting flange.

Furthermore, the fixed shaft is a hollow shaft, a wire guide hole penetrating to the stator disc is formed in the fixed shaft, and a wire inlet hole is formed in the fixed shaft and located outside the lower shell.

The invention has the beneficial effects that the rare earth permanent magnet blocks are arranged in the rotating shell to serve as the rotor assembly and rotate along with the work of the motor, and the stator disc and the fixed shaft are fixed to serve as fixed ends, so that the axial size of the motor is greatly reduced; by arranging the shaft sleeve, the weight of the motor is reduced, and the cost is reduced; the air inlet hole and the air outlet hole are arranged, so that the motor can be cooled while rotating, and the heat dissipation directly dissipates two heating sources, namely a stator disc and a rare earth permanent magnet of the motor, and the heat dissipation effect is good; the stator fixing seat and the stator fixing cover are arranged, so that the mounting difficulty of the stator disc is simplified, and the stator disc is stably and reliably fixed; the motor fixing seat and the connecting flange are arranged, so that the motor can be conveniently fixed and connected with output equipment.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a top view of the present invention.

In the figure, 1 upper shell, 2 upper rare earth permanent magnet, 3 space ring, 4 lower shell, 5 lower rare earth permanent magnet, 6 stator disc, 7 stator fixing seat, 8 stator fixing cover, 9 standard flat key, 10 motor fixing seat, 11 wire inlet hole, 12 fixing shaft, 13 lower bearing, 14 locking nut, 15 air inlet hole, 16 air outlet hole, 17 lightening groove, 18 shaft snap spring, 19 upper bearing, 20 wire hole, 21 hole snap spring, 22 connecting flange, 23 spacing boss, 24 flange screw hole, 25 shaft fixing bolt and 26 shell fixing bolt.

Detailed Description

As shown in fig. 1-3, the present invention includes a fixed shaft 12 and a rotating housing disposed on the fixed shaft 12 through a bearing, wherein a stator disc 6 is fixedly disposed on the fixed shaft 12, the stator disc 6 is disposed in the rotating housing, the rotating housing includes an upper shell 1 and a lower shell 4, the end surface of the upper shell 1 close to the stator disc 6 is provided with a plurality of upper rare earth permanent magnets 2 in an annular array, the end surface of the lower shell 4 close to the stator disc 6 is provided with a plurality of lower rare earth permanent magnets in an annular array, the two adjacent and opposite rare earth permanent magnets are opposite in grade, and a certain gap is formed between the rare earth permanent magnets on the upper shell 1 and the lower shell 4 and the stator disc 6, and the gaps are equal.

One end of the upper shell 1 is provided with a bearing mounting step, and an upper bearing 19 is arranged in the step; a shaft clamp spring 18 is arranged in the fixed shaft 12 at the upper bearing 19 and used for limiting the axial displacement of the upper bearing 19 towards one side of the connecting flange 22, and a hole clamp spring 21 is also arranged in the bearing mounting step and used for limiting the axial displacement of the upper bearing 19 towards one side of the lower bearing 13; one end of the lower shell 4 is provided with a bearing mounting step and a lower bearing 13 is arranged in the step.

According to the invention, the rare earth permanent magnet blocks are arranged in the rotating shell to serve as a rotor assembly and rotate along with the motor, the stator disc 6 and the fixed shaft 12 are fixed to serve as fixed ends, the axial size of the motor is greatly reduced by the combination of the rotating shell and the rare earth permanent magnet blocks, the rare earth permanent magnet blocks of the motor are combined with the stator disc, the normal rotation of the motor is ensured, and the motor can be used as power for driving the propeller of the unmanned aerial vehicle.

In order to facilitate the fixed connection of the upper shell 1 and the lower shell 4 and simultaneously to design consideration of light weight, the outer edges of the upper shell 1 and the lower shell 4 are provided with the spacer bushes 3, the upper shell 1, the spacer bushes 3 and the lower shell 4 are fixed through the shell fixing bolts 26, the spacer bushes 3 can be made of light weight materials, and the weight of the whole motor is reduced; and the upper shell 1 and the lower shell 4 are also provided with lightening grooves at the position of the spacer 3, so that the weight of the motor is further reduced, and the mounting position is also provided for the stator disc 6.

The upper shell 1 and the lower shell 4 are provided with air inlet holes 15 penetrating through the stator disc 6, air outlet holes 16 are formed in the outer ring of the spacer sleeve 3, a gap between the stator disc 6 and the rare earth permanent magnet block is communicated with the air inlet holes 15 and the air outlet holes 16, when the motor runs, the upper shell 1 and the lower shell 4 rotate with the rare earth permanent magnet block to drive the air at the back of the motor to generate negative pressure in a rotating mode, pressure difference is formed between the inside and the outside of the motor, air outside the motor enters the motor through the air inlet holes 15, the air is discharged from the air outlet holes 16 through the gap between the rare earth permanent magnet block and the stator disc 3 to take away heat generated inside the motor, the heat of a heat source inside the motor is directly taken away, the heat dissipation effect is greatly improved, and in order to prolong the service life of the motor, isolating nets used for preventing dust from flying in are further arranged.

In order to further improve the heat dissipation effect, the air inlet holes 15 and the air outlet holes 16 are arranged in a plurality of groups along the axis of the fixed shaft 12 in an annular array mode, the air inlet holes 15 and the air outlet holes 16 are arranged in a plurality of groups in an annular array mode, the air inflow and the air outflow of heat dissipation are greatly increased, and the heat dissipation effect is improved.

The invention also comprises a stator fixing seat 7 and a stator fixing cover 8, wherein the stator disc 6 is fixedly arranged between the stator fixing seat 7 and the stator fixing cover 8, the electronic disc 6 is fixed through the stator fixing seat 7 and the stator fixing cover 8, and the disassembly and assembly difficulty of the stator disc 6 is simplified, as shown in fig. 2, a step is arranged at the matching position of the fixing shaft 12 and the stator fixing seat 7, one end of the stator fixing seat 7 is clamped to the step to limit the stator fixing seat 7, and the stator fixing seat 7 is connected with the fixing shaft 12 through a standard flat key 9.

Stator fixing base 7 and stator dish 6 are fixed through spacing boss 23, and spacing boss 23 prevents that 6 axial rotations of stator dish from carrying out the fixed spacing of axis direction to stator dish 6, and stator fixed cover 8 and stator dish 6 are provided with spacing boss 23 equally, further increase structural strength, the stator of being convenient for simultaneously fixes the installation location of cover 8.

The fixed shaft 12 is provided with a locking nut 14 on one side of the stator fixing cover 8, the locking nut 14 axially positions the stator fixing cover 8 to prevent the stator fixing cover 8 from axially moving, and two locking nuts 14 can be used for double-nut locking and fixing.

For the convenience of fixed motor, fixed axle 12 runs through inferior valve 4, and the end fixing is provided with motor fixing base 10, and motor fixing base 10 is used for fixing this motor and sets up at the mounted position, for example unmanned aerial vehicle's screw position, and motor fixing base 10 is fixed through axle fixing bolt 25 with fixed axle 12, is provided with the screw hole that is used for fixed mounting on the motor fixing base 10.

In order to facilitate connecting the driving part, the end fixing of the upper shell 1 is provided with a connecting flange 22, and the connecting flange 22 is provided with a flange screw hole 24 which can be used for connecting and fixing the propeller of the unmanned aerial vehicle. The arrangement of the connecting flange 22 improves the expandability of the motor.

In order to provide a circuit wiring channel, the fixed shaft 12 is a hollow shaft, a wire guide hole 20 penetrating to the stator disc 6 is formed in the fixed shaft 12, a wire inlet hole 11 is formed in the fixed shaft 12 and located outside the lower shell 4, and an electric wire penetrates through the wire inlet hole 11 and is connected to the inside of the motor through the wire guide hole 20.